Bio Systems

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Biology

Anatomy

Last updated 7:34 PM on 4/8/26
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10 Terms

1
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What percentage of blood is Plasma?

55%

2
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What vertebrates have blood flowing from respiratory system organs to tissues without first going to the heart?

Fishes

3
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What is the correct order of blood flow in mammals and reptiles?

vena cava → right atrium → right ventricle → pulmonary circuit

4
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Which of the following body structures would a red blood cell encounter first as it travels through your circulatory system if it is currently in your foot?

vena cava

5
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Blood returning to the mammalian heart in a pulmonary vein drains first into the __________.

left atrium

6
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True or False? Pulmonary veins carry oxygen-rich blood to the heart.

True

7
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Blood returns to the heart via the _____.

Pulmonary veins

8
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Arteries

Arteries carry blood away from the heart

9
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Capillary beds

Site of nutrient and oxygen delivery to tissues

10
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What part of blood transports O2

erythocytes